Luminous composition



s earner trace,

EREDRIGK N. HmG', OF NEW YORK,1\T. Y2, ASSIGNOR T0 THOMAS HOWARD, 0E

Newman, N. r.

LUMIN'OUS comrosrrron'.

unease.

No Drawing.

Another object is to provide means,-1n the form of tenaciouslyladherent liquids, by which the compound may be applied n the manner of paint;

A further objectis to blend with the mass,

coloring matter whereby any of the li hter tints or shades of color may be obtaine The compound consists of a mixture of certain hereinafter named mineral salts'and chemicals, each in a relatively p'ure,"dry. -and finely pulverized state.

In preparing thelcompound the ingredt, ents are mixed in substantially the following quantities by weight;

calcium sulphide, luminous. 3

.55 per cent .18 zinc sulphide;

.09 barium sulphide. .09 zinc'sulphate.

.09 7 calcium carbonate.

These several powdered substances an.

1 each of them ordinary commercial commodi ties, purchasable in chemical supply houses,

till

their source and derivation being well known to the trade and not a part of this invention.- The powders are thoroughly mixed, blended and commingled by agitation, sifting and like mechanical means in a perfectly dry,-

cool condition, no artificial heat being used stage in the production of the. commass from which emanate clearly perceptible After mixing, low pans to the direct rays of the sun' or a powerful artificial light for approximately three hours, when it is in condition to mix with a liquid used merely as a convenient vehicle, acting as a binder or adhesive by which no natural I when closed, having had its walls painted" with the compound, and exposed to a bright which consists of a white odorless" Patented tenet, 1922.

which the compound can be applied as a paint, the proportion preferred being substantially one ounce of the compound to one pound of the liquid, but may be modified in accordance with the effects it is-desired'to produce.

This'liquid is preferably a White, enamel, as used for interior finish, adapted for quick drying although Japan or. in act anyordinary oil paint with the exception of those containing lead; the compound may also be used in connection with any of the'cold watermineral paints with good results.

H Obviously. pigments. in powdered 'condition ma be added to'the' compound in order to pro uce colors, particularly of light shades.

The compound when applied 'to surfaces adheres without peeling or cracking, producing a lustrous, glossy finish and is caperiod of time and practical purposes.

-Thesel surfaces must be exposed for a time to the action of light,

in sufiicientvolume for variable period of the length 'ofexposure being pro ortionate to the strength of the light, and for bright 'sun light about'three hour's.

.; iAs aninstance, the interior of closets in or artificial light enters light for a suitableperiod of time, has sufii-' cient luminosity to enable ordinary plain print to be read and when the luminous property offthe compound becomes diminished it is quickly and entirely recuperated subjecting the painted surfaces'to the b edect of a powerful light for a briefperiod of'time and such restorations ma be repeated indefinitely as required, t e light emanating properties not appreciably becoming exhausted. These several substances when mixed with ordinary white paints of zinc foundation, enables the paint to give better reflection of light, due to the peculiar qualities the composltion has of absorption and later of reflection.

I am aware that certain constituents of drier may be used, i

vp'able of omitting light for a considerable the compound are known to possess actim'c properties, and have been used for like purposes, but in the, combination as presented .the process of mixing and the'manner. of

its application together with revivication isbelieved to benew and constitute an advance q in the art, therefore what I claim is 1. A com osition adapted to produce a luminous e ect,-- comprising zinc sulphate and sulphide, calcium carbonate and sulphide and barium sulphide, all intimately mixedin powdered form.

2. A com osition adapted to produce a luminous e ect comprising luminous calciumsul hide, fiftysfive parts by weight, zinc' sulp lde eighteen parts, barium sulphide nine parts, 'zinc sulphate nine partsand calcium. carbonate nine parts.

3. Acom osition adapted toroduce a luminous e ect 'com rising lumi us calcium sulphide, essentially fifty-five parts by wei ht, zinc sulphide eighteen parts, barium sulp ide nine parts, zinc sulphate nine parts and calcium carbonate nine parts, and a bea lied.

liquid vehicle by which the composition may composition adapted to produce a luminous efi'ect comprising zinc sulphate and sulphide, calcium carbonate and sulphide, and barium sulphide, all intimately mixed in-lpowdered form, and a liquid having adhesive and drying properties in which said substances are united as a vehicle for'appli-' cation, the proportion of said dry compound to said liquid being1 substantially one to sixteen parts by weig t 5. A composition comprising luminous sulfids in combination with an alkali earth metal carbonate, to form a composition adapted to produce a luminous effect.

6. A composition comprising luminous sulfids in combination witha zinc sulphate,

to form a composition adapted to producea luininouseffect.

7, The process of producing luminous surfaces consisting ofmixing zinc sulphate and sul hide, calcium carbonate and sulphide, and barium sulphide in a liquid, applying the mixture as a paint and exposing the faces consisting -o coated surfaces initially and at intervals to lightwhereby the luminosity of the surfaces are revived. l

\ 8. The process of roducing luminous surmixing metallic salts having luminous properties, in a dry cool powdered condition, with a liquid vehicle having adhesive properties, applying the mixture as a paint, exposing the painted surfaces to actinic light rays either. natural or artificial and repeating such exposure as may be required;

' 9. The process of producing luminous surfaces consisting of mixing metallic salts having luminous properties, in powdered form,

then exposing to sunli' ht or strong artificial light for-a number of ours and mixing apto approximately one pound of a liquid or pigment, and applying the mixture as a paint.

11. The process of producing luminous surfaces consisting of mixing metallic salts having luminous properties, in powdered form, then exposing to sunlight or strong artificial light for a number of hours, mixing approximately one ounce of the composition v to approximately one pound of a llquid or pigment applyingthe mixture as a paint, and exposing the coated surface initially and at intervals to light whereby the luminosity of the surfaces are revived.

In testimony whereof I have signed my name to this specification.

'FREDRIGK N; HERING, 

